Search:

Type: Posts; User: ewang

Page 1 of 2 1 2

Search: Search took 0.01 seconds.

  1. Replies
    10
    Views
    1,018

    Max info frames can be brought up, that will help...

    Max info frames can be brought up, that will help prevent the card from locking up.
    What is the Instance and station address of your FX?
  2. Replies
    10
    Views
    1,018

    Per Carel's website for the pCO-Net card (BACnet...

    Per Carel's website for the pCO-Net card (BACnet MSTP card), the card is optoisolated from the controller. Therefore, the ground is not shared between the controller and card.

    What are the other...
  3. Replies
    16
    Views
    1,907

    Thats interesting. Good that its working now!

    Thats interesting. Good that its working now!
  4. Replies
    16
    Views
    1,907

    Just curious, when you say "the new one isn't...

    Just curious, when you say "the new one isn't working", what do you mean? Have you tried a 3rd party Modbus Master program to test the registers? Personnally, I like mtester:...
  5. Thread: Html code

    by ewang
    Replies
    4
    Views
    605

    Like everyone else said, this will require...

    Like everyone else said, this will require JavaScript.

    I'm not sure how much you have researched yet, but a site called W3Schools is an excellent source when learning HTML, CSS and basic...
  6. Replies
    7
    Views
    1,154

    The Max Master should be set to the highest local...

    The Max Master should be set to the highest local address, in your case 107.
    http://www.chipkin.com/how-does-bacnet-mstp-discover-new-devices-on-a-network/
  7. Replies
    16
    Views
    1,907

    Ok, so you have experience with these. I was...

    Ok, so you have experience with these.

    I was looking through some of the IOMs on Uniflair's website and I couldn't find where the controller gets configured for Modbus/Lon/BACnet option cards. ...
  8. Replies
    16
    Views
    1,907

    Are you plugged into the right port? I assume...

    Are you plugged into the right port? I assume you are plugged into an add-on card located in the "Serial Card" opening.
    What is the model of the card located in this port? I think it should be...
  9. Replies
    16
    Views
    1,907

    Ironically, I did as well after I replied...

    Ironically, I did as well after I replied...
  10. Replies
    16
    Views
    1,907

    Its all on how Carel handles integers vs analog...

    Its all on how Carel handles integers vs analog variables internal to the controller and how it should be interpreted via BMS protocols.

    Its a feature that's useful for OEMs, and is only useful...
  11. Replies
    16
    Views
    1,907

    Depending on an internal variable (Modbus...

    Depending on an internal variable (Modbus Extension) of the program, the offset for the Integers is either 129 or 209, so Integer address 1 = Modbus register 40130 or 40210.
  12. Replies
    2
    Views
    1,378

    Any reason you are not using 1Too1? EasyTool is...

    Any reason you are not using 1Too1? EasyTool is now obsolete.
  13. Thread: Spot the problem

    by ewang
    Replies
    10
    Views
    2,420

    Thats just to make sure it doesn't open itself...

    Thats just to make sure it doesn't open itself during shipping.
  14. Thread: TCP/IP

    by ewang
    Replies
    46
    Views
    4,063

    To get a better idea of how most communication...

    To get a better idea of how most communication works, search the internet for how the OSI Model works. It made things click for me when I didn't understand how everything plays together.

    Heres a...
  15. Replies
    49
    Views
    11,160

    BACnet... just out of curiosity, what programming...

    BACnet... just out of curiosity, what programming environment did you use to build the program? Visual Studio?

    Nice job!
  16. Thread: makeup air

    by ewang
    Replies
    21
    Views
    3,404

    Greenheck, Captiveair are two others.

    Greenheck, Captiveair are two others.
  17. Replies
    19
    Views
    3,929

    I can eat about 5 of them... Damn, now I have to...

    I can eat about 5 of them... Damn, now I have to go buy tomatoes...
  18. Replies
    8
    Views
    1,569

    Yaskawa? New favorite quote! :cheers:

    Yaskawa?

    New favorite quote! :cheers:
  19. Replies
    5
    Views
    963

    http://www.sphcontrols.com/pdf/LGR25.pdf Is...

    http://www.sphcontrols.com/pdf/LGR25.pdf

    Is this the router you are working with? Did you set the LGR to the default IP address, and set your laptop within the same range?

    The 100 light means...
  20. Replies
    8
    Views
    1,210

    Does it act like a dehumidifier? Any condensate...

    Does it act like a dehumidifier? Any condensate drains?
  21. Thread: OA Intakes

    by ewang
    Replies
    8
    Views
    1,416

    Install some aluminum mesh filters in the...

    Install some aluminum mesh filters in the weatherhood (Permatron)

    1" is sufficient for bug elimination
    2" is sufficient for bug and mist elimination
  22. Replies
    8
    Views
    1,749

    From what I have heard, they make great units,...

    From what I have heard, they make great units, just that they are a little pricey.
  23. Replies
    15
    Views
    2,064

    They expose all of these points? How do they...

    They expose all of these points? How do they have enough room? Aren't most LON devices limited on the number of variables? (50ish?)

    Can anyone post a screenshot of the duplicate's? I am...
  24. Replies
    2
    Views
    1,137

    This may be typical of the heavy aluminum wheels,...

    This may be typical of the heavy aluminum wheels, but the lighter polymer wheels that AAON uses (AirXchange) has a much longer lifespan.
  25. Replies
    17
    Views
    5,303

    I doubt this is the case, but I've seen this...

    I doubt this is the case, but I've seen this happen to forward curve fans with PSC motors in the field...

    If the fan is spinning fast enough in the opposite direction while off (free wheeling),...
  26. Replies
    5
    Views
    1,541

    Aaon has a mess of controller's out there. Post...

    Aaon has a mess of controller's out there. Post a model number of the unit, and try to get a model of the controller.
  27. Replies
    2
    Views
    522

    I've got an old copy of Visual Studio laying...

    I've got an old copy of Visual Studio laying around from college. Its more cumbersome than MSFT Expression Web, but it will do.
  28. Replies
    2
    Views
    522

    Air Handler Graphic in HTML, .js, .css

    I am trying to create a webpage for customer to view points over IP. I have a template HTML, Javascript, and Cascading Style Sheet to work off of, but its very basic; no graphics, etc.

    I've been...
  29. Replies
    32
    Views
    2,258

    Any of Weinbrenner's Thorogood boots will do. In...

    Any of Weinbrenner's Thorogood boots will do. In my opinion, they have a tennis shoe feel compared to the rock hardness of the Bates boots.

    I've also got some Converse boots which are ok, but...
  30. Thread: Service Bag

    by ewang
    Replies
    14
    Views
    2,626

    http://www.amazon.com/Custom-LeatherCraft-1539-Mul...

    http://www.amazon.com/Custom-LeatherCraft-1539-Multi-Compartment-Carrier/dp/B000EDTSZG/ref=sr_1_1?ie=UTF8&qid=1307889910&sr=8-1

    CLC 1539 for those who want to save some dough. I love it.
  31. Replies
    3
    Views
    1,570

    In laymans terms, modulation is the ability to...

    In laymans terms, modulation is the ability to adjust. A simple reference to everyday life; your car's engine. Your foot can modulate the car's power by adjusting the gas pedal. Without...
  32. Replies
    16
    Views
    2,180

    Well, I've played around with both today, and let...

    Well, I've played around with both today, and let me tell you, using SNVT_count_inc for building pressure, and SNVT_count for duct pressure works great.

    I don't have to convert anything to Pa...
  33. Replies
    16
    Views
    2,180

    Why would hardcore Lon fans be opposed to using...

    Why would hardcore Lon fans be opposed to using the a pressure gauge SNVT for pressure?
  34. Replies
    14
    Views
    2,825

    Modbus Tester is awesome....

    Modbus Tester is awesome.
    http://www.modbus.pl/Modbus_Tester.html
  35. Thread: Humidity Problem

    by ewang
    Replies
    15
    Views
    1,398

    What is your location? Based on your R-value, I...

    What is your location? Based on your R-value, I assume somewhere in the south-west.

    If its dry outside, bringing in fresh outside air may do the trick.
  36. Thread: crack is back

    by ewang
    Replies
    32
    Views
    2,415

    I wonder, does insurance cover something like...

    I wonder, does insurance cover something like that?

    @ggold - did you take a picture of the owner's facial expression when you broke the news?
  37. Replies
    16
    Views
    2,180

    Then what is the point of even having STANDARD...

    Then what is the point of even having STANDARD Network Variable Types?:gah:
  38. Replies
    3
    Views
    665

    Also interested, but possibly involving a...

    Also interested, but possibly involving a different curriculum.
    PM sent.
  39. Replies
    16
    Views
    2,180

    Its odd, because my mentor has been sending...

    Its odd, because my mentor has been sending pressures as SNVT_Count_inc [value/1000 = 0.000"WC] for the past 7 years. He claims he has never had any issues, but then again, maybe he never heard the...
  40. Replies
    8
    Views
    1,027

    Wonder if the time off is paid?

    Wonder if the time off is paid?
  41. Replies
    16
    Views
    2,180

    Dapper - Forgive my ignorance when it comes to...

    Dapper - Forgive my ignorance when it comes to integration. I work for an OEM equipment manufacturer, and my field experience is growing, but limited.

    Is there a reference guide to what points...
  42. This is usually my experience! Guess work at...

    This is usually my experience! Guess work at best. Engineer's plan a design, it gets tweaked during construction, then commissioning happens. Then, its the T&B and the manufacturers problem!
  43. Replies
    6
    Views
    1,708

    With the return ducts running into a common...

    With the return ducts running into a common location, you do run the risk of having air migrate backwards IF the bathroom is somehow positively pressured compared to the rest of the space. How often...
  44. Thread: SWUD question

    by ewang
    Replies
    12
    Views
    1,610

    Is there a command for "Reset Alarms"?

    Is there a command for "Reset Alarms"?
  45. Replies
    7
    Views
    993

    If its hunting, I would try increasing the...

    If its hunting, I would try increasing the proportional band (slowing reaction), as it will decrease overshoot.
  46. Replies
    7
    Views
    993

    Oops. The A1-01 password may not have been...

    Oops. The A1-01 password may not have been introduced that long ago. But its on the newer Yaskawa drives.
  47. Replies
    7
    Views
    993

    A1-01 needs to be 0002 if its password...

    A1-01 needs to be 0002 if its password protected.

    Then, as DaveCR mentioned the drive must be stopped, via whatever method you are commanding it to run. Wait for the drive to actually stop, then...
  48. Sticky: New to the site, trying to go pro. Work as a...

    New to the site, trying to go pro.

    Work as a mechanical engineer at a company that makes HVAC equipment. I program our DDC controllers. I constantly look on this site for tips on making our...
  49. Replies
    69
    Views
    4,212

    As far as 12ga shottys go, how is it shooting one...

    As far as 12ga shottys go, how is it shooting one with a pistol grip compared to standard? Will it rip your hand off?
  50. Replies
    3
    Views
    666

    What brand of unit? Is there a bypass damper? ...

    What brand of unit? Is there a bypass damper?

    If there is no bypass damper, or automatic profile control, then you will have to try to make both speeds work within the differential pressure...
Results 1 to 50 of 80
Page 1 of 2 1 2
Comfortech Show Promo Image

Related Forums

Plumbing Talks | Contractor Magazine
Forums | Electrical Construction & Maintenance (EC&M) Magazine
Comfortech365 Virtual Event